TWI843608B - Air Quality Monitor - Google Patents

Abstract

An air quality monitor includes a housing unit, a sensing unit, and a processing unit connected to the sensing unit by a signal. The housing unit includes a bottom wall, a surrounding wall, a top wall, and two spaced-apart heat-insulating walls. One of the heat-insulating walls, the bottom wall, the surrounding wall, and the top wall together define a sensing space in which the sensing unit is disposed. The other heat-insulating wall, the bottom wall, the surrounding wall, and the top wall together define a processing space in which the processing unit is disposed. The heat-insulating walls together define a heat-insulating space passing through the bottom wall and the top wall. The housing unit also includes at least one air hole connecting the outside world with the sensing space. The present invention sets the heat-insulating space so that waste heat generated by the processing unit is difficult to be transmitted to the sensing space, thereby improving the sensing accuracy of the sensing unit.

Description

Air Quality Monitor

The present invention relates to a sensor, in particular to an air quality monitor.

The existing air quality monitor includes a housing, a sensing unit and a processing unit installed in the housing. The sensing unit can initially generate an original sensing signal after sensing the external air. After that, the processing unit processes the received sensing signal to generate a readable air quality data. Then, the air quality data is transmitted to a user interface on a mobile phone, tablet or computer for display. The user can understand the quality of the air by viewing the user interface.

Since the waste heat generated by the processing unit during operation will affect the sensing results of the sensing unit, how to isolate the waste heat generated by the processing unit to improve the accuracy of sensing is still a problem that needs to be improved.

Therefore, the purpose of the present invention is to provide an air quality monitor with improved sensing accuracy.

Therefore, the air quality monitor of the present invention includes a housing unit, a sensing unit, and a processing unit.

The housing unit includes a bottom wall, a surrounding wall extending upward from the periphery of the bottom wall in an up-down direction, a top wall connected to the surrounding wall and spaced apart from the bottom wall in the up-down direction, and two heat-insulating walls spaced apart along a length direction perpendicular to the up-down direction. The heat-insulating walls extend along a width direction perpendicular to the length direction and are connected to the surrounding wall. One of the heat-insulating walls defines a sensing space together with the bottom wall, the surrounding wall and the top wall. The other heat-insulating wall defines a processing space together with the bottom wall, the surrounding wall and the top wall. The heat-insulating walls define a heat-insulating space through the bottom wall. The bottom wall has at least one bottom heat-insulating hole connecting the outside world with the heat-insulating space. The housing unit also includes at least one air hole connecting the outside world with the sensing space.

The sensing unit is disposed in the sensing space and can sense the external air through the air hole to generate a sensing signal.

The processing unit is disposed in the processing space, and the signal is connected to the sensing unit, and can generate air quality data according to the sensing signal.

The effect of the present invention is that the heat-insulating space connected to the outside is defined by the heat-insulating walls to form an air gap between the processing space and the sensing space, so that the waste heat generated by the processing unit is difficult to be transmitted to the sensing space. Therefore, the sensing of the sensing unit can be prevented from being disturbed by the waste heat, and the sensing accuracy is improved.

1: Shell unit

101: Sensing Space

102: Processing space

103: Insulated space

104: Closed space

105: Subspace

11: Bottom wall

110: Bottom insulation hole

111: Setup Department

112: Raised part

12: Wall

120: Stoma

121: Heat sink

13: Top wall

130: Top insulation hole

14: Insulation wall

140:Piercing

141: Insulated bottom surface

142: Depression

15: Strengthen the ribs

151: First reinforcement rib

152: Second reinforcement rib

153: Strengthen the wall

16: Closed wall

17: Rib reinforcement group

18: Filling piece

19: Inscription

2: Sensing unit

3: Processing unit

4: Transmission unit

41: Transmission line set

42: Heat insulation glue

9: Set up the plane

Z: Up and down direction

X: Length direction

Y: width direction

Other features and effects of the present invention will be clearly presented in the embodiments with reference to the drawings, wherein: FIG. 1 is a three-dimensional diagram illustrating an embodiment of the air quality monitor of the present invention; FIG. 2 is a three-dimensional diagram of the embodiment viewed from another angle; FIG. 3 is a three-dimensional exploded diagram of the embodiment; FIG. 4 is a top view of the embodiment, with a name plate omitted; FIG. 5 is a cross-sectional view taken along line V-V in FIG. 1; FIG. 6 is a cross-sectional view taken along line VI-VI in FIG. 5; FIG. 7 is a cross-sectional view taken along line VII-VII in FIG. 5; FIG8 is a cross-sectional view taken along line VIII-VIII in FIG5; FIG9 is a cross-sectional stereoscopic view of a portion of the embodiment; FIG10 is a stereoscopic view of the embodiment viewed from another angle, with a bottom wall omitted; FIG11 is a cross-sectional stereoscopic view of a portion of the embodiment; FIG12 is a stereoscopic view similar to FIG10 but viewed from another angle; FIG13 is an incomplete top view illustrating a variation of the embodiment; FIG14 is a cross-sectional stereoscopic view of a portion of the variation; and FIG15 is a cross-sectional view taken along line XV-XV in FIG13.

Referring to Figures 1 to 4, an embodiment of the air quality monitor of the present invention is suitable for being set on a setting plane 9 (see Figure 6), and includes a housing unit 1, a sensing unit 2, a processing unit 3, and a transmission unit 4.

The housing unit 1 includes a bottom wall 11, a surrounding wall 12 extending upward from the periphery of the bottom wall 11 along a vertical direction Z, a top wall 13 connected to the surrounding wall 12 and spaced apart from the bottom wall 11 in the vertical direction Z, two heat-insulating walls 14 spaced apart along a length direction X perpendicular to the vertical direction Z, a plurality of reinforcing rib groups 15, two closing walls 16, two reinforcing rib groups 17 (see FIG. 5), and two filling pieces 18.

Referring to Figures 2, 4 to 6, the insulation walls 14 extend along a width direction Y perpendicular to the length direction X and are connected to the surrounding wall 12. One of the insulation walls 14 defines a sensing space 101 together with the bottom wall 11, the surrounding wall 12 and the top wall 13. Another insulation wall 14 defines a processing space 102 together with the bottom wall 11, the surrounding wall 12 and the top wall 13. The insulation walls 14 define an insulation space 103 through the bottom wall 11 and the top wall 13.

The bottom wall 11 has two setting parts 111 spaced apart along the length direction X and connected to the setting plane 9, a raised part 112 connected to the setting parts 111 and spaced apart from the setting plane 9 in the up-down direction Z, and a bottom heat insulation hole 110 connecting the outside world and the heat insulation space 103 and formed in the raised part 112. By setting the raised part 112 apart from the setting plane 9, it is possible for the outside air to enter the heat insulation space 103 more easily through the bottom heat insulation hole 110, thereby improving the heat insulation effect of the heat insulation space 103.

In this embodiment, the bottom wall 11 can be detachably connected to the surrounding wall 12, which is convenient for assembly. However, in other variations, the bottom wall 11 and the surrounding wall 12 can also be formed as one piece.

The surrounding wall 12 has a plurality of heat dissipation grooves 121 extending from the outer surface to the inner surface and extending along the length direction X. The heat dissipation grooves 121 are arranged at intervals along the up-down direction Z. The heat dissipation grooves 121 can increase the surface area of the surrounding wall 12, thereby improving the heat dissipation effect and preventing heat accumulation inside the housing unit 1.

The top wall 13 has a plurality of top heat-insulating holes 130 for connecting the outside world with the heat-insulating space 103. By connecting the heat-insulating space 103 to the outside world and separating the sensing space 101 from the processing space 102, the heat generated by the processing space 102 can be prevented from being transmitted to the sensing space 101.

Referring to Figures 7 to 10, each of the heat-insulating walls 14 has a heat-insulating bottom surface 141 adjacent to the bottom wall 11, two recessed portions 142 extending upward from the heat-insulating bottom surface 141 along the vertical direction Z, and a through hole 140 extending from one side along the length direction X to the other side. The through holes 140 are respectively formed in the recessed portions 142 and extend upward from the heat-insulating bottom surface 141 along the vertical direction Z.

Referring to Figures 4, 5, 8 and 10, each of the reinforcing rib groups 15 has two first reinforcing ribs 151 extending oppositely from the insulation walls 14 along the length direction X, and a second reinforcing rib 152 connected to the first reinforcing ribs 151. By providing the reinforcing rib groups 15, the structural strength between the insulation walls 14 can be improved, and the shell unit 1 can be prevented from being compressed and deformed toward the insulation space 103 when compressed, which has the advantage of improving durability.

Referring to Figures 8, 10 and 11, in this embodiment, one of the second reinforcing ribs 152 is adjacent to the top wall 13, and the remaining second reinforcing ribs 152 are adjacent to the bottom wall 11. By arranging at least one of the second reinforcing ribs 152 adjacent to the top wall 13, and arranging at least another of the second reinforcing ribs 152 adjacent to the bottom wall 11, the housing unit 1 is difficult to be deformed and damaged by being folded in half along the length direction X, thereby further improving the structural strength and having the advantage of being more durable. In other variations, the number of the second reinforcing ribs 152 of each reinforcing rib group 15 may also be two, or more than two, without limitation.

It should be noted that in this embodiment, the top heat insulation holes 130 are separated by the second reinforcing rib 152 disposed adjacent to the top wall 13, but in other variations, the number of the top heat insulation holes 130 may be one, three, or more than three, and is not limited thereto, as long as they can be used to connect the heat insulation space 103 with the outside world.

Referring to Figures 13 to 15, in other variations, the reinforcing rib groups 15 (see Figures 8 and 10) can also be replaced by a plurality of reinforcing walls 153 connecting the insulating walls 14 along the length direction X. The reinforcing walls 153 are arranged at intervals along the width direction Y and extend downward from the top wall 13 along the up-down direction Z. The reinforcing walls 153 divide the insulating space 103 into a plurality of subspaces 105 that are not interconnected. In this way, the structural strength can be further improved, and the advantage of being more durable can be achieved.

Referring to Figures 2, 5, 8 and 12, the closed walls 16 are spaced apart from the surrounding wall 12 along the width direction Y. Each of the closed walls 16 is connected to the insulation walls 14, and together with the insulation walls 14, the top wall 13 and the surrounding wall 12, defines a closed space 104. The insulation walls 14 and the closed walls 16 together define the insulation space 103. One of the through holes 140 connects the closed space 104 with the sensing space 101. Another through hole 140 connects the closed space 104 with the processing space 102.

In other variations, the through holes 140 can also be respectively arranged such that one of the through holes 140 connects the sensing space 101 and the heat-insulating space 103, and another of the through holes 140 connects the processing space 102 and the heat-insulating space 103.

In this embodiment, the insulation walls 14 and the closed walls 16 extend from the bottom insulation hole 110 along the vertical direction Z to the outer surface of the bottom wall 11. However, in other variations, the insulation bottom surfaces 141 of the insulation walls 14 and the bottom surfaces of the closed walls 16 below the vertical direction Z may also abut against the inner surface of the bottom wall 11, and the bottom wall 11 and the adjacent second reinforcing ribs 152 jointly define a plurality of the bottom insulation holes 110. The number of the bottom insulation holes 110 may also be two, or more than two, but is not limited thereto.

Referring to Figures 5, 7, 9 and 12, each of the reinforcing rib groups 17 is located in one of the closed spaces 104 and connects the surrounding wall 12, the top wall 13, the heat insulating walls 14 and one of the closed walls 16. The provision of the reinforcing rib groups 17 can improve the structural strength of the shell unit 1 and prevent the shell unit 1 from being compressed and deformed toward the closed space 104 when compressed, thereby having the advantage of improving durability.

In this embodiment, the surrounding wall 12, the top wall 13, the heat insulating walls 14, the reinforcing rib groups 15, the closing walls 16 and the reinforcing rib groups 17 are formed as one piece, so the structural strength is better.

The housing unit 1 also includes a plurality of air holes 120 formed on the surrounding wall 12 and connecting the outside world with the sensing space 101. In other variations, the air holes 120 may also be formed on the bottom wall 11 or the top wall 13, as long as they can connect the outside world with the sensing space 101.

Referring to Figures 9 to 12, the sensing unit 2 is disposed in the sensing space 101 and can sense the external air through the air holes 120 to generate a sensing signal.

The processing unit 3 is disposed in the processing space 102, and the signal is connected to the sensing unit 2, and can generate air quality data according to the sensing signal.

The transmission unit 4 includes a transmission line set 41 electrically connecting the sensing unit 2 and the processing unit 3, and a heat-insulating glue 42. The transmission line set 41 passes through the through holes 140. The heat-insulating glue 42 is filled between the through holes 140 and the transmission line set 41.

In this embodiment, the perforations 140 are arranged between one of the closed walls 16 and the surrounding wall 12. Therefore, when installing the transmission line set 41, the housing unit 1 is inverted as shown in FIG. 10, and the transmission line set 41 is connected to the sensing unit 2 and the processing unit 3 through the perforations 140, and then the heat insulating glue 42 is filled and the filling pieces 18 are placed to complete the installation. Therefore, it has the advantages of easy assembly and reduced production cost. At the same time, the filling pieces 18 abut against the recessed parts 142 and close the closed space 104. The heat insulating glue 42 and the filling pieces 18 can prevent the heat in the processing space 102 from flowing to the sensing space 101 through the closed wall 16 and the surrounding wall 12.

In other variations, the sensing unit 2 and the processing unit 3 can also transmit the sensing signal wirelessly without providing the transmission unit 4 and the perforations 140. However, in this embodiment, the sensing unit 2 and the processing unit 3 are electrically connected by the transmission line set 41, which makes it less likely that the sensing unit 2 and the processing unit 3 will generate additional heat during the signal transmission process, and therefore, the sensing accuracy is higher.

In this embodiment, in order to prevent dust from entering the interior and to remind the user of the function of the air quality monitor, the housing unit 1 may also optionally include a nameplate 19 attached to the top wall 13. The user can remove the nameplate 19 and open the top insulation hole 130 to improve the insulation effect. However, as long as at least one of the bottom insulation hole 110 (see FIG. 2 ) and the top insulation hole 130 is connected to the outside world, the outside air can enter the insulation space 103, thereby preventing the heat in the processing space 102 from flowing to the sensing space 101.

Through the above description, the advantages of the aforementioned embodiments can be summarized as follows:

1. The heat-insulating space 103 connected to the outside is defined by the heat-insulating walls 14, and an air gap can be used to block the processing space 102 and the sensing space 101, so that the waste heat generated by the processing unit 3 is difficult to be transmitted to the sensing space 101. Therefore, the sensing of the sensing unit 2 can be prevented from being disturbed by the waste heat, which has the advantage of improving the sensing accuracy.

2. The transmission line set 41 is provided to reduce the extra heat generated during the signal transmission between the sensing unit 2 and the processing unit 3. At the same time, the heat insulating glue 42 and the fillers 18 prevent the heat in the processing space 102 from flowing to the sensing space 101 through the closed wall 16 and the surrounding wall, thereby improving the sensing accuracy of the sensing unit 2.

3. By arranging the through holes 140 between one of the closed walls 16 and the surrounding wall 12, extending the through holes 140 upward from the heat-insulating bottom surface 141 along the vertical direction Z, and arranging the bottom wall 11 to be detachably connected to the surrounding wall 12, it has the advantages of facilitating assembly and reducing production costs.

4. By providing the heat dissipation grooves 121 to improve the heat dissipation effect, and providing the raised portion 112 to make it easier for the outside air to enter the heat insulation space 103 through the bottom heat insulation hole 110, the waste heat can be further reduced to affect the sensing of the sensing unit 2, thereby achieving higher sensing accuracy.

5. By providing the reinforcing rib groups 15 and the reinforcing rib groups 17, and forming the surrounding wall 12, the top wall 13, the heat insulating wall 14, the reinforcing rib groups 15, the closing wall 16 and the reinforcing rib groups 17 into an integral shape, the structural strength and durability can be improved. In other variations, the structural strength and durability can be further improved by providing the reinforcing walls 153.

However, the above is only an example of the implementation of the present invention, and it cannot be used to limit the scope of the implementation of the present invention. All simple equivalent changes and modifications made according to the scope of the patent application of the present invention and the content of the patent specification are still within the scope of the patent of the present invention.

1: Shell unit

103: Insulated space

11: Bottom wall

110: Bottom insulation hole

111: Setup Department

112: Raised part

12: Wall

120: Stoma

121: Heat sink

13: Top wall

14: Insulation wall

141: Insulated bottom surface

15: Strengthen the ribs

151: First reinforcement rib

152: Second reinforcement rib

16: Closed wall

2: Sensing unit

Z: Up and down direction

X: Length direction

Y: width direction

Claims (14)

An air quality monitor comprises: a housing unit, including a bottom wall, a surrounding wall extending upward from the periphery of the bottom wall in a vertical direction, a top wall connected to the surrounding wall and spaced apart from the bottom wall in the vertical direction, and two heat-insulating walls spaced apart along a length direction perpendicular to the vertical direction, the heat-insulating walls extending along a width direction perpendicular to the length direction and connected to the surrounding wall, wherein one of the heat-insulating walls and the bottom wall, the surrounding wall and the top wall jointly define a sensing space, and the other of the heat-insulating walls and the bottom wall, the surrounding wall and the top wall jointly define a sensing space. The top wall defines a processing space together, the heat-insulating walls define a heat-insulating space through the bottom wall together, the bottom wall has at least one bottom heat-insulating hole connecting the outside world and the heat-insulating space, the housing unit also includes at least one air hole connecting the outside world and the sensing space; a sensing unit is arranged in the sensing space, and can sense the outside air through the at least one air hole to generate a sensing signal; and a processing unit is arranged in the processing space, and the signal is connected to the sensing unit, and can generate air quality data according to the sensing signal. The air quality monitor as described in claim 1 further comprises a transmission unit, which includes a transmission line set electrically connecting the sensing unit and the processing unit, and each of the heat-insulating walls has a through hole extending from one side along the length direction to the other side, and the transmission line set passes through the through holes. The air quality monitor as described in claim 2, wherein the transmission unit further includes a heat insulating glue, which is filled between the perforations and the transmission line set. The air quality monitor as described in claim 2, wherein the housing unit further includes at least one closed wall spaced apart from the surrounding wall along the width direction, the at least one closed wall is connected to the insulation walls, and defines a closed space together with the insulation walls, the top wall and the surrounding wall, the insulation walls and the at least one closed wall define the insulation space together, one of the through holes connects the closed space with the sensing space, and the other through hole connects the closed space with the processing space. An air quality monitor as described in claim 4, wherein each of the heat-insulating walls also has a heat-insulating bottom surface adjacent to the bottom wall, and the through hole extends upward from the heat-insulating bottom surface along the up-down direction. The air quality monitor as described in claim 5, wherein each of the heat-insulating walls further has a recessed portion extending upward from the heat-insulating bottom surface along the up-down direction, the perforations are respectively formed in the recessed portions, and the housing unit further includes a filling member, which abuts against the recessed portions and closes the closed space. The air quality monitor as described in claim 4, wherein the housing unit further includes a reinforcing rib set located in the enclosed space and connecting the insulation walls, the surrounding wall and the at least one enclosed wall. The air quality monitor as described in claim 1, wherein the surrounding wall has a plurality of heat dissipation grooves extending from the outer surface to the inner surface and extending along the length direction, and the heat dissipation grooves are arranged at intervals along the up-down direction. The air quality monitor as described in claim 1, wherein the housing unit further comprises a plurality of reinforcing rib groups, each of which comprises two first reinforcing ribs extending oppositely from the insulation walls along the length direction, and at least one second reinforcing rib connecting the first reinforcing ribs. An air quality monitor as described in claim 9, wherein at least one of the second reinforcing ribs is adjacent to the top wall, and at least another of the second reinforcing ribs is adjacent to the bottom wall. The air quality monitor as described in claim 1, wherein the housing unit further includes a plurality of reinforcing walls connected to the insulation walls, the reinforcing walls extending downward from the top wall along the up-down direction and dividing the insulation space into a plurality of sub-spaces. An air quality monitor as described in claim 1, wherein the surrounding wall, the top wall and the insulation walls are integrally formed, and the bottom wall is detachably connected to the surrounding wall. The air quality monitor as described in claim 1, wherein the top wall has at least one top insulation hole connecting the outside world and the insulation space. The air quality monitor as described in claim 1 is suitable for being set on a setting plane, wherein the bottom wall also has two setting parts which are spaced apart along the length direction and connected to the setting plane, and a raised part which is connected to the setting parts and spaced apart from the setting plane in the up and down directions, and the raised part is formed with at least one bottom insulation hole.